diff --git a/builder/kojid b/builder/kojid
index b3389353..9352a01b 100755
--- a/builder/kojid
+++ b/builder/kojid
@@ -245,7 +245,7 @@ def incrementalUpload(fname, fd, path, retries=5, logger=None):
             break
         
         data = base64.encodestring(contents)
-        digest = md5_constructor.new(contents).hexdigest()
+        digest = md5_constructor(contents).hexdigest()
         del contents
         
         tries = 0
diff --git a/cli/koji b/cli/koji
index efbc207c..ed475ccb 100755
--- a/cli/koji
+++ b/cli/koji
@@ -1173,7 +1173,7 @@ def handle_import_sig(options, session, args):
         previous = session.queryRPMSigs(rpm_id=rinfo['id'], sigkey=sigkey)
         assert len(previous) <= 1
         if previous:
-            sighash = md5_constructor.new(sighdr).hexdigest()
+            sighash = md5_constructor(sighdr).hexdigest()
             if previous[0]['sighash'] == sighash:
                 print _("Signature already imported: %s") % path
                 continue
diff --git a/hub/kojihub.py b/hub/kojihub.py
index 9df6ef44..ea562046 100644
--- a/hub/kojihub.py
+++ b/hub/kojihub.py
@@ -3456,7 +3456,7 @@ def add_rpm_sig(an_rpm, sighdr):
         #we use the sigkey='' to represent unsigned in the db (so that uniqueness works)
     else:
         sigkey = koji.hex_string(sigkey[13:17])
-    sighash = md5_constructor.new(sighdr).hexdigest()
+    sighash = md5_constructor(sighdr).hexdigest()
     rpm_id = rinfo['id']
     # - db entry
     q = """SELECT sighash FROM rpmsigs WHERE rpm_id=%(rpm_id)i AND sigkey=%(sigkey)s"""
@@ -4702,7 +4702,7 @@ class RootExports(object):
             if size is not None:
                 if size != len(contents): return False
             if md5sum is not None:
-                if md5sum != md5_constructor.new(contents).hexdigest():
+                if md5sum != md5_constructor(contents).hexdigest():
                     return False
         uploadpath = koji.pathinfo.work()
         #XXX - have an incoming dir and move after upload complete
@@ -4762,7 +4762,7 @@ class RootExports(object):
                         fcntl.lockf(fd, fcntl.LOCK_UN)
                 if md5sum is not None:
                     #check final md5sum
-                    sum = md5_constructor.new()
+                    sum = md5_constructor()
                     fcntl.lockf(fd, fcntl.LOCK_SH|fcntl.LOCK_NB)
                     try:
                         # log_error("checking md5sum")
diff --git a/koji/__init__.py b/koji/__init__.py
index c72fd370..ef89e256 100644
--- a/koji/__init__.py
+++ b/koji/__init__.py
@@ -1467,7 +1467,7 @@ class ClientSession(object):
         fo = file(localfile, "r")  #specify bufsize?
         totalsize = os.path.getsize(localfile)
         ofs = 0
-        md5sum = md5_constructor.new()
+        md5sum = md5_constructor()
         debug = self.opts.get('debug',False)
         if callback:
             callback(0, totalsize, 0, 0, 0)
@@ -1484,7 +1484,7 @@ class ClientSession(object):
                 sz = ofs
             else:
                 offset = ofs
-                digest = md5_constructor.new(contents).hexdigest()
+                digest = md5_constructor(contents).hexdigest()
                 sz = size
             del contents
             tries = 0
diff --git a/www/lib/kojiweb/util.py b/www/lib/kojiweb/util.py
index e8c751da..6e520e13 100644
--- a/www/lib/kojiweb/util.py
+++ b/www/lib/kojiweb/util.py
@@ -73,7 +73,7 @@ def _genToken(req, tstamp=None):
         return ''
     if tstamp == None:
         tstamp = _truncTime()
-    return md5_constructor.new(user + str(tstamp) + req.get_options()['Secret']).hexdigest()[-8:]
+    return md5_constructor(user + str(tstamp) + req.get_options()['Secret']).hexdigest()[-8:]
 
 def _getValidTokens(req):
     tokens = []